-3- 409 -4- 10g 59- 12 g Mg -at mass 24- react with dilute mineral acid to produce maximum hydrogen equal to -1- 0-5 mol -2- 1-5 mol -3- 1-59 -4- 0-5 g 60 Volume NTP of oxygen required to completely burn 1 kg of coal -100- carbon-

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(3) 409 (4) 10g 59. 12 g Mg (at mass 24) react with dilute mineral acid to produce maximum hydrogen equal to (1) 0.5 mol (2) 1.5 mol (3) 1.59 (4) 0.5 g 60 Volume at NTP of oxygen required to completely burn 1 kg of coal (100% carbon)